Ask a New Question

There are 10 coins, 5 of which are heads up and 5 of which are tails up.

On each turn, you choose exactly 3 coins and flip them over.

What is the minimum number of turns needed to make all of the coins heads up?

1 answer

Looks like 3 to me:
HHHHHTTTTT
HHHHHHHHTT
HHHHHHTTHT
HHHHHHHHHH

Ask a New Question or answer this question.

Similar Questions

you have16 coins that are heads up an18 coins that are tails up. After you add some coins that are tails up, the ratio of heads
1. 1 answer
Four coins fall onto the floor. Find the probability that(a) exactly three coins land heads up (b) all coins land tails up (c)
1. 3 answers
you and your partner are about to toss 2 coins 100 times. Predict about how many times the outcome woukd be.a. heads-heads b.
1. 1 answer
you have 16 coins that are heads up and 18 coins that are tails up. After you add some coins that are tail up the ratio of heads
1. 1 answer

more similar questions